I'm not aware of anyone trying to reproduce the editor pixel grid functionality in Godot. You can get the bounding box of the skeleton in its coordinate system via SpineSprite.get_skeleton().get_bounds()
. Depending on your scene hierarchy, you might have to transform those bounds further, i.e. by the SpineSprite and anything else that may modify the on-screen location of the sprite, like a camera system. That's not something we can anticipate or cover via our API.
As for consoles, I'm working on turning spine-godot into an extension. W4 Games has indicated interest in that with regards to consoles as well, so there's a clear path forward plus safety for businesses targeting consoles with Godot via W4 Games. We ourselves do not have access to any console SDKs, so we won't be able to give support for that.